What is an AI Game Master?

Most AI Game Masters cannot actually roll dice.

In a typical AI RPG tool the AI writes the whole scene as text - including the "dice". So when you swing at a goblin, the result is whatever the model decides to type next. There is no real d20, no rule being enforced, nothing stopping it from saying "you hit" when you missed or inventing a spell slot you do not have. For pure storytelling that is fine. For anyone who came from a real D&D table, it means the dice mean nothing.

LoomMaster is built the other way around. A real D&D 5e rules engine rolls and validates every die on the server and writes it to a tamper-evident ledger before the AI narrates. The AI is a brilliant narrator wrapped around an honest engine - it describes what already happened and can never fudge a roll for you or against you. You can even mint a public Loom Seal that re-verifies every natural d20 your campaign rolled, so anyone can confirm the dice were never touched.

Narrate freely, but enforce the rules honestly.

The best of both worlds is an AI that improvises a living world and respects the rulebook: real attack rolls and saving throws, spell slots and conditions that are tracked, death saves that actually matter, and bosses that fight by their statblock. It should remember your campaign across sessions, run solo or with friends, and never need you to have read a wiki first.

That is the bar LoomMaster is built to: full D&D 5e across all 12 classes, a persistent world that remembers your choices, solo or co-op play, and a searchable in-game guide so a complete newcomer can play. Free to start, in any browser, no install.

AI Game Masters, answered.

What is an AI Game Master? An AI Game Master (also called an AI GM) is software that runs the role of a human Game Master in a tabletop RPG like Dungeons & Dragons - describing scenes, playing NPCs and monsters, and resolving what happens when you act. LoomMaster is an AI Game Master for D&D 5e that you play in your browser, solo or co-op, free to start.

Can AI run a game of D&D? Yes. AI is excellent at the narration and improvisation a Game Master does. The hard part is the rules and the dice: a chatbot can only write the dice into the story, so outcomes are not real. LoomMaster solves this by running a real 5e rules engine that rolls and validates every die before the AI narrates, so the game is played by the book.

Can an AI Game Master cheat or fudge the dice? In most AI RPG tools, yes - the AI writes the dice as part of the text, so it can produce any outcome. In LoomMaster, no: every roll is computed by the engine and sealed to a tamper-evident ledger before narration, and you can publicly verify any campaign with a Loom Seal.

Is an AI Game Master as good as a human DM? A human DM is still unmatched for reading the table and bending the story to the people in the room. But an AI Game Master is available any hour with no scheduling, never forgets a detail, and in LoomMaster’s case enforces the rules perfectly and never fudges a roll. Many players use it to play solo, learn the game, or keep a campaign going between sessions.

How much does an AI Game Master cost? LoomMaster is free to start with no card. After that it is $29.99 a month with the AI run and paid for you, or a one-time $49.99 if you bring and pay for your own AI. A $249 lifetime option is offered to the first 200 founders.

Do I need to know the D&D rules to use one? No. LoomMaster enforces the rules for you and includes a searchable, plain-language guide to every class, condition, and system, so you learn as you play. You describe what you want to do in plain English; the engine handles the math.